Soldering-nipple for electric cables.



PATBNTBD JULY 18, 1905.

H. B. PROGUNIER. SOLDERING NIPPLE FOR ELECTRIC GABLES.

APYLIOATION FILED JULY 22.1903.

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UNITED STATE Patented July is, 1905.

PATENT UFFICE.

SOLDERlNG-NIPPLE FOR ELECTRIC CABLES.

'sP'EcIFIcArron forming part of Letters Patent No. 794,742, dated July 18, 1905.

Application filed July 22, 1903. Serial No. 166,515.

To 11. whom it imty concern: I

Be it known that 1.,"HENRY E. PRooUNIER, a citizen of the United States, residing at Oak Park, in the county of Cook and State of Illinois, have invented new and useful Improvements in Soldering-Nipples for Electric Cables, of which the following is a specification, reference being had to the accompanying drawings, forming a part thereof.

The purpose of this invention is to provide a device for connecting electric cables into terminal boxes or equivalent structures, in whiclrthe parting of the several wires of the cable occurs in such manner as to admit of the effective soldering of the cable at the entrance, as is necessary in order to perfectly exclude moisture.

It consists in the structures and features of construction which are set out in the claim.

In the drawings, Figure 1 is a partly-sectional front elevation of a portion of a terminal head and the entering cable, in which my invention is embodied, section being made axially with respect to the soldering-nipple through the same and the adjacent portions of the terminal head and cable. Fig. 2 is a detail section at the line 2 2 on Fig. 1. Fig. 3 is a detail section at the line 3 3 on Fig. 1. Fig. 4: is an axial section of the soldering-nipple and the cable therein after the soldering is effected.

The terminal head A illustrated is of known construction and does not constitute of itself any part of this invention. It may stand for any inclosure into which the cable leads and within which it branches or is parted into the several component wires or subcables, so that the latter may lead out independently. It will be understood that in the terminal head, as illustrated, the outleading wires are provided with fuse connections which appear in the drawings, but that this is not an essential feature of the present invention.

A is the terminal head or box.

B represents the entering cable.

C C C represent the outleading wires with their intervening fuse connections D D D.

E is the soldering-nipple, which embodies the features constituting my invention. It is screwed into the terminal head, the latter being provided with a cable-entrance at F, interiorly threaded for the purpose of such connection. The upper end of the nipple E is tapered and exteriorly threaded, so as to be screwed to a moisture-proof fit in the threaded cable-entrance.

Below such tapered and threaded end E it has a boss E for the engagement of the wrench, which, however, is preferably far enough back from the end so that it does not constitute a stop-shoulder, and does not in any event prevent the nipple from coming tight by screwing its tapered end in, as described. The lower end portion of the nipple has its interior diameter sufficient to admit a cable of the largest size for which the fitting is designed, and at a point somewhat above the lower end the cavity is increased in diameter, forming an annular interior enlargement E, which extends up, to about the level of the lower side of the boss E though it may extend to any distance upward. This annular enlargement E? is occupied an annulus G, of solder, preferably of s uch thicknessoas to leave the interior diameter equal substantially to the interior diameter-of the nipple at the lower end.

In using this nipple it is preferably screwed home into the cable-entrance F of the terminal head or other inclosure and the cable is inserted up through it into the inclosure. After all connections of the parted wires of the cable are made in the terminal head or such other manipulations of the several wires as might require that the cable should be free for longitudinal movement through the nipple the crevice around the cable at the lower end of the nipple is closed by any convenient means-as, for example, by winding a piece of electric tapeH about the end of the nipple and onto the cable below the sameand by means of any convenient device, as the customary blow-torch, heat is applied to the protruding portion of the nipple below the boss E that is, outside the portion within which the annulus G, of solder, is locatedand from that point down to the lower end, until the solder is melted and flows down from its original seat into the crevice below and between the cable and the nipple at the lower end portion of the latter and out into the space, if

any, which is inclosed by the tape H around l the nipple and the cable is exposed outside the cable just below the end of the nipple filling said crevice and appurtenant space, ready to set to the cable and the inner surface of the nipple, the former having been prepared by tinning or other equivalent means at the portion at which the junction with the nipple should occur. l/Vhe'n the solder has thus become melted and has flowed into place, as desired, which may be known by testing the temperature of the nipple throughout its circumference and length by a piece of solder applied thereto exteriorly, the heatingmeans being withdrawn, any cooling. means, as a wet cloth, being applied the solder will be set irmly in place in the lower portion of tlic nipple'funiting the latter perfectly with the cable. The tape H being removed, the joint may be inspected and the completeness of the inclosure at the lower end observed and tested.

1 do not limit myself to the precise form of the nipple herein shown nor to any particular method of closing the lower end to prevent the escape of the solder, provided it be such as may be employed after the cable is in its linal desired position and provided the portion of the nipple containing the solder annulus which is to effect the junction between the terminal head or equivalent inclosure when the nipple is screwed into linal position, for it is of the essence of my invention that it shall be possible to efi'ect the soldering by the exterior application of heat to the nipple after all the parts are in desired position and that no adjustment of the parts shall be necessary after the soldering is done.

I claim A soldering-nipple for attachment to an inclosure of the pal-tings of an electric cable, comprising a portion threaded for attachment to such inclosure and a portion adapted to protrude and be exteriorly exposed, said exteriorly-exposed portion having an annularlyenlarged cavity at the upper part and an annular body of solder occupying such enlargement.

In testimony whereof I have hereunto set my hand, in the presence of two witnesses, at Chicago, Illinois, this 15th day of July, A. D.

HENRY E. PROOUNIER.

In presence of- CHAS. S. BURTON, FRED. G. FISCHER. 

